The PSP and the Fuse.

The backlighting fuse is the most frequent one to go out.
Before soldering over the fuse try using a voltage tester to see if there is continuity.
To bridge the fuse I would recommend to solder over it since The Lead Free solder makes it hard to remove the fuse from the board.

Parts List,

    1.    #000 Philips Screwdriver.
    2.    Small flat head screwdriver
    3.    Soldering iron and solder
    4.    small piece of wire.
    5.    Multi-Meter (optional)

Carefully follow the PSP disassembly until STEP #4

Step 1 Removing The Face Plate.

	Here is your familiar PSP, we are going to remove the 7 Case screws from the back of your PSP.
	Turn over your PSP and remove the battery, You will see your "Warranty void if removed" sticker..  Well, I think its time for it to be voided.
	There are 3 different types of screws in the case screw set. 4 BLACK Type "A" screws, 2 SILVER Type "B" screws, and one Silver Type "C" There are 2  screws under the Warranty sticker. One Type "A" and One Type "B" The Black Type "A" screws are holding your faceplate on,  The smaller silver Type "B" screws are holding the LCD metal holder in place.
	Go a head and remove all 7 case screws. Put them in a bag or on a magnet to keep them from falling off your workspace.
	Now that the screws are out  go a head and pull the face plate off. Pull up on the bottom of the faceplate. ( where screw "C" is)

 Step 2 Removing The Button Bar.

	Insert your small screwdriver tip under the lip of the left side of the button bar and slide upwards until the bar is disconnected from the metal LCD housing.. NOTE: DO NOT LOOSE THE RUBBER CONTACT FOR THE THUMB STICK!!!!
	Then carefully unplug the button bars flex cable. By lifting the tab upwards and sliding the cable out.

Step 3 Removing The LCD.

	The flex cable connectors are quite week and require extra care. so don't force to hard or you could have a very nice looking Door Jam.
	On the left side of the LCD screen there is a metal housing that is holding the LCD in place. You need to unhook the left side of the LCD from this housing by sliding a small flat screwdriver in between the LCD housing and the LCD mounting bracket. slowly popping the tabs for the LCD to come out.
	Slowly pull the other side out  and then tilt the LCD  at a 90◦ bend so you have access to the flex cable connectors.
	Lift up the clamps on the connectors, the brown clips are the only part that will lift up, any more pressure and you could remove the whole clip...
	I recommend putting the LCD back onto of the faceplate. so that dust and other debris don't fall onto your screen and window.  DO NOT WIPE YOUR WINDOW JUST YET,  it is very easy to scratch the inside of the faceplate, if there is excessive dust try blowing it out with your can of air, or use the very soft and clean wiping cloth, A micro fiber rag has to many " Micro Fibers" and actually scratches the screen worse.

Step 4 Removing The LCD Brace.

	There are 2 Types of screws for the Lcd Brace. A Silver Type "A" and a Silver Type "D" *Depending on your version of PSP, you might have a silver or black Type "A" screw that positions the UMD door, the only difference is color.
	Start by removing the selected screws. *Note the pink stars unscrew from behind the battery, we should have removed them earlier.
	Gently pry the brace outwards between the Dpad and the housing using your flathead driver. there are small tabs that hold them both together.
	Now that the tabs are free from the Dpad, You can press the latch to open the UMD door. This allows the UMD Latch to move through the hole on the backside of the case
	Wiggle that guy free.

Repairing The Backlight Fuse.

	Backlighting not working? Even after replacing a Backlight?
	The fuse for the backlighting is labeled with FD on it. Test the continuity of the fuse. If there is continuity then this will not work for you.
	You will need to take a small piece of wire and bypass the fuse by soldering the wire to the two pads on the motherboard.
	Now hook up your LCD screen and see if it worked. It should look something like this.

Repairing The USB Fuse.

	This LD Fuse. Will cause your USB to not recognize any more.
	If there is no continuity through this fuse, You can jumper it and hopefully fix your USB.

Repairing The Power Fuse.

	This Fuse will cause your PSP To not turn on at all.
	IF THERE IS CONTINUITY THEN TRY RUNNING THE PSP MOTHERBOARD OUT OF THE CASE.
	The TD Fuse Is now bridged.